HDAC7 and acute lymphoblastic leukemia: When BCR-ABL1− pre-B-ALL cells were exposed to low dose of CC1007 (1.25 μM) for 7 days and co-immunoprecipitation was done in parallel on the third, fifth, and seventh day, the binding of HDAC7 and MEF2C became gradually weak and followed incubation-time prolongation (Fig. 6e), which was consistent with the immunofluorescence localization results where the color yellow indicated that the HDAC7:MEF2C complex was observed in the nuclei in the absence of CC1007 (Fig. 6f).